<!DOCTYPE html>
<html>

<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    .bj {
      background-image: url(./img/it1.gif);
      width: 100%;
      min-width: 1024px;
      height: 720px;
      
    }
  </style>
</head>

<body>
  <div class=".bj">
    <div class="center">
      <div>
        <h1>biu biu~ 服务器内部错误。 走丢啦！</h1>
        <p>没关系我带你回去。</p>
      </div>
      <div>
        <button><a href="index.html">返回首页</a></button>
        <button><a href="#">返回上一页</a></button>
      </div>
    </div>
  </div>

</body>

</html>